/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import { SortPipe } from './sort.pipe';

describe('SortPipe', () => {
    const values: string[] = ['alpha', 'omega', 'beta', 'theta', 'phi'];

    it('create an instance', () => {
        const pipe = new SortPipe();
        expect(pipe).toBeTruthy();
    });

    it('sorts ascending by default', () => {
        const pipe = new SortPipe();
        const sorted: string[] = pipe.transform(values);

        expect(sorted).toEqual(['alpha', 'beta', 'omega', 'phi', 'theta']);
    });

    it('sorts descending', () => {
        const pipe = new SortPipe();
        const sorted: string[] = pipe.transform(values, 'desc');

        expect(sorted).toEqual(['theta', 'phi', 'omega', 'beta', 'alpha']);
    });
});
